| 引用本文: | 许丹,孙振江,柳征,等.时变信道下雷达辐射源个体识别的局部相关检验方法.[J].国防科技大学学报,2015,37(1):148-152.[点击复制] |
| XU Dan,SUN Zhenjiang,LIU Zheng,et al.Radar emitter identification in time-variation channel based on local correlation test[J].Journal of National University of Defense Technology,2015,37(1):148-152[点击复制] |
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| 时变信道下雷达辐射源个体识别的局部相关检验方法 |
| 许丹, 孙振江, 柳征, 姜文利 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 辐射源个体识别是电子战领域的研究热点。针对时变信道下波形已知的雷达个体分类问题，基于似然比检验提出一种稳健的局部相关检测方法。该方法利用雷达波形中差异度较大的部分生成参考波形，构建假设检验模型进行信号分类，并通过比例因子调节参考波形的差异显著性。仿真实验表明，随着参考波形差异显著性增强，本方法识别性能明显优于直接最大似然比方法，具有较好的抗多径性能。 |
| 关键词: 辐射源识别 特定辐射源识别 时变信道 最大似然检测 局部相关 |
| DOI：10.11887/j.cn.201501025 |
| 投稿日期：2013-08-24 |
| 基金项目:国家自然科学基金资助项目（61002026） |
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| Radar emitter identification in time-variation channel based on local correlation test |
| XU Dan, SUN Zhenjiang, LIU Zheng, JIANG Wenli |
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(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Emitter identification is brought into research hotspot in the field of electronic warfare. To solve the problem of radar emitter identification in time-variation channel, a local correlation testing based on Likelihood Test was proposed. The method used the radar waveforms with large diversity parts to form reference waveform, identified signals by building a hypothesis model, and adjusted the variability of reference waveforms by a scale coefficient. Simulation result shows that the recognition performance and the multipath interference performance of the method are better than likelihood-ratio test with the incremental variability of the reference signal. |
| Keywords: emitter identification specific emitter identification time-variation channel likelihood-ratio test local correlation test |
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